Built in 2001, by Main Iron Works of Houma, Louisiana (hull #412) as the Kristina A. for TMA Marine of Cut Off, Louisiana. TMA Marine was eventually acquired by Odyssea Vessels, Incorporated of Berwick, Louisiana. Where the tug retained her name. In 2014, Odyssea sold its Towing Vessel Division to concentrate fully on the OSV segment of the industry. The tug was acquired by Crosby Marine Transportation of Golden Meadow, Louisiana. Where she was renamed as the Crosby Integrity. Powered by two Caterpillar 3512B diesel engines, with Reintjes WAF 772 reduction gears. At a ratio of 7:1, turning two stainless steel, fixed pitch propellers, mounted in kort nozzles for a rated 6,000 horsepower. Her electrical service is provided by two 75kW Caterpillar 3306 generators. The tug’s capacities are 90,000 gallons of fuel, 660 gallons of lube oil, 500 gallons of hydraulic oil, 660 gallons of gear oil, and 8,800 gallons of potable water. The towing equipment consists of a Markey TDSDS 32 towing winch, outfitted with 2,450(ft) of 2(in) diameter towing cable.